<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>Document</title>
</head>
<body>
	<div>
		<div>
			<p>0</p>
			<div>
				<p>1</p>
			</div>
			<p>2</p>
		</div>
		<p>3</p>
		<div>
			
		</div>
	</div>
	<p>4</p>


	<script type="text/javascript">
		var ps = document.getElementsByTagName("p");
		var divp = document.getElementsByTagName("div");

		divp[0].style.backgroundColor = "skyblue";
		ps[2].style.backgroundColor = "yellow";
		ps[3].style.backgroundColor = "yellowgreen";

	</script>
</body>
</html>